Buggy code:
@ SuppressWarnings ( "rawtypes" ) public class Task extends ServiceExertion { private static final long serialVersionUID = 5179772214884L ; protected static final Logger logger = Logger . getLogger ( Task . class . getName ( ) ) ; public static final String argsPath = "method//args" ; private boolean isContinous = false ; protected Task delegate ; public Task ( ) { } public Task ( String name ) { } public Task ( Signature signature ) { } public Task ( String name , Signature signature ) { } public Task ( Signature signature , Context context ) { } public Task ( String name , Signature signature , Context context ) { } public Task ( String name , String description ) { } public Task ( String name , List < Signature > signatures ) { } public Task ( String name , String description , List < Signature > signatures ) { } public Task doTask ( ) throws RemoteException , ExertionException , SignatureException { } public Task doTask ( Transaction txn ) throws RemoteException , ExertionException , SignatureException { } public Task doTask ( Exertion xrt , Transaction txn ) throws ExertionException { } public void updateConditionalContext ( Conditional condition ) throws ContextException , EvaluationException { } public void undoTask ( ) throws RemoteException , ExertionException , SignatureException { } public void setIndex ( int i ) { } @ Override public boolean isTask ( ) { } @ Override public boolean isCmd ( ) { } public boolean hasChild ( String childName ) { } public boolean isJob ( ) { } public void setOwnerId ( String oid ) { } public ServiceContext doIt ( ) throws ExertionException { } public boolean equals ( Task task ) throws Exception { } public String toString ( ) { if ( ( delegate ) != null ) { return delegate . toString ( ) ; } <START_BUG> StringBuilder sb = new StringBuilder ( ( ( ( "\n===<seq2seq4repair_space>START<seq2seq4repair_space>PRINTNIG<seq2seq4repair_space>TASK<seq2seq4repair_space>===\nExertion<seq2seq4repair_space>Description:<seq2seq4repair_space>" + ( getClass ( ) . getName ( ) ) ) + ":" ) + ( name ) ) ) ; <END_BUG> sb . append ( "\n\tstatus:<seq2seq4repair_space>" ) . append ( getStatus ( ) ) ; sb . append ( ",<seq2seq4repair_space>task<seq2seq4repair_space>ID=" ) ; sb . append ( getId ( ) ) ; sb . append ( ",<seq2seq4repair_space>description:<seq2seq4repair_space>" ) ; sb . append ( description ) ; sb . append ( ",<seq2seq4repair_space>priority:<seq2seq4repair_space>" ) ; sb . append ( priority ) ; sb . append ( ",<seq2seq4repair_space>AccessClass=" ) ; sb . append ( getAccessClass ( ) ) . append ( ",<seq2seq4repair_space>providerName:<seq2seq4repair_space>" ) ; if ( ( getProcessSignature ( ) ) != null ) sb . append ( getProcessSignature ( ) . getProviderName ( ) ) ; sb . append ( ",<seq2seq4repair_space>principal:<seq2seq4repair_space>" ) . append ( getPrincipal ( ) ) ; sb . append ( ",<seq2seq4repair_space>serviceInfo:<seq2seq4repair_space>" ) . append ( getServiceType ( ) ) ; sb . append ( ",<seq2seq4repair_space>selector:<seq2seq4repair_space>" ) . append ( getSelector ( ) ) ; sb . append ( ",<seq2seq4repair_space>parent<seq2seq4repair_space>ID:<seq2seq4repair_space>" ) . append ( parentId ) ; if ( ( fidelity . size ( ) ) == 1 ) { sb . append ( getProcessSignature ( ) . getProviderName ( ) ) ; } else { for ( Signature s : fidelity ) { sb . append ( "\n<seq2seq4repair_space>" ) . append ( s ) ; } } String time = getControlContext ( ) . getExecTime ( ) ; if ( ( time != null ) && ( ( time . length ( ) ) > 0 ) ) sb . append ( "\n\texec<seq2seq4repair_space>time=" ) . append ( time ) ; sb . append ( controlContext ) . append ( "\n" ) ; sb . append ( dataContext ) ; sb . append ( "\n===<seq2seq4repair_space>DONE<seq2seq4repair_space>PRINTING<seq2seq4repair_space>TASK<seq2seq4repair_space>===\n" ) ; return sb . toString ( ) ; } public String describe ( ) { } public boolean isTree ( Set visited ) { } public Exertion getUpdatedExertion ( int type ) { } @ Override public Context linkContext ( Context context , String path ) { } @ Override public Context linkControlContext ( Context context , String path ) { } @ Override public List < Exertion > getExertions ( ) { } public List < Exertion > getExertions ( List < Exertion > exs ) { } @ Override public Exertion addExertion ( Exertion component ) { } public Task getDelegate ( ) { } public void setDelegate ( Task delegate ) { } public boolean isContinous ( ) { } public void setContinous ( boolean isContinous ) { } protected Task doBatchTask ( Transaction txn ) throws RemoteException , ContextException , ExertionException , SignatureException { } @ Override public Object getValue ( String path , Arg ... args ) throws ContextException { } }

Fix:
StringBuilder sb = new StringBuilder ( ( ( ( "\n===<seq2seq4repair_space>START<seq2seq4repair_space>PRINTING<seq2seq4repair_space>TASK<seq2seq4repair_space>===\nExertion<seq2seq4repair_space>Description:<seq2seq4repair_space>" + ( getClass ( ) . getName ( ) ) ) + ":" ) + ( name ) ) ) ;